a have a cpc turbo on my 08. in 26 years of riding this by far the best sled i have owned. i have the race kit but i have the boost turned down to 7# and have run it on 91 pump all year(1200 plus miles) all trouble free.the difference in cost between the pump and race kit is 1000$ but with the race kit you get the cold air intake, intank high volume fuel pump,and all dales wizbang cluthing, (iv been on the same belt all year)...this sled is spot on and never have to adjust anything. i will do another one on a 2010 m8.